Octeville-sur-Mer is a commune in the Seine-Maritime department, Normandy, northern France. It is twinned with Bourne End in United …Octeville-sur-Mer is a commune in the Seine-Maritime department, Normandy, northern France. It is twinned with Bourne End in United Kingdom since 2003 and with Furci Siculo in Italy since 2010. A small farming town in the Pays de Caux with huge cliffs overlooking the English Channel, some 4 miles north of Le Havre, at the junction of the D31 and D940 roads. The commune covers a large area, and boasts an airport, a golf course and several small villages and hamlets.